ISHS Acta Horticulturae 491: International Symposium Greenhouse Management for Better Yield & Quality in Mild Winter Climates
STUDIES ON RADIOMETRIC, THERMAL AND CLIMATIC PROPERTIES OF A NEW GREENHOUSE COVERING MATERIAL |
| Authors: | S. Wang, J.G. Pieters, J. Deltour |
| Keywords: | PVC rigid sheet, k-factor, condensation effect, low emissivity, simulation |
| Abstract:
A new PVC bi-oriented corrugated rigid sheet was studied. Its radiometric, thermal and climatic properties were compared with glass and PE film. Analysis of the radiometric data showed a relative improvement by in 5% PAR transmittance. Analysis of the thermal flux densities exchanged by the covers suggested an "ideal" PVC sheet whose low emissivity should produce a 13% reduction of its heat transfer coefficient and a 21% reduction of the annual heat load. | |
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